Drier-rolls for paper-machines.



W. SHEAHAN. v DRIER ROLLS FOR PAPER IMIIIGHIlIES.

APPLICATION FILED JULY 5, 1913.

1,104,759. Ifatented July 21, 1914,

2 SHEETS-SEBET l.

WITNESSES; H INVENTOB Z PUM I Will/am fifieahan,

N A TTORNE Y W. SHBAHAN.

DRIER ROLLS FOR PAPER MAG HINES. APPLICATION FILED JULY 5, 1913.

1,1043% Patented July 21, 19m

2 SHEETS-SHEET 2.

4M I William g 2 22mm.

UNITED STATES PATENT OFFICE.

WILLIAM SHEAHAN, OF OREGON CITY, OREGON.

DRIER-ROLLS FOR PAPER-MACHINES.

Specification of Letters Patent.

Application file'd July 5, 1913. serial no; 'haeon.

per-Machines, of which the following is a.

specification.

'My invention relates to paper making, and particularly to paper making machines wherein the paper web after leaving the press rolls is run over a series of drier rolls between drier felts. In "the first stages ofthese machines theleading end of the paper web had to be thrown between the felts by the operator, in order to conduct the paper web from one to the other of the drier rolls. In the later improvements, endless tapes were provided for conveying the leading end of the pa er web from roll to roll. The difliculty with such means of "conveying the paper web from roll to roll'is, that it lacked means for causmg the tapes to run at the proper speed relat vely to the roller over which they are running, and in consequence there was a tendency of the web of paper being torn. The tapes for conveying the paper web from one'd'rie'r roll to another could not be successfully run on the periphery of such drier rolls for several reasonsv which are manifest when pointed out; for example, if the tapes are run on a surface lyingv in the same plane as that on which the drier felt is running, the latter would have a tendency to run on the higher surface produced on the periphery of the drier roll by the tapes, and the tapes, running over the web of paper, having a slightly greater speed than the drier rolls, would have a tendency to tear the paper web, especially at the point where 'such overlying tapes pass from one drier roll to another. Furthermore, the edges of the paper web nearest the tapes are held slightly spaced from the periphery of the drier roll, and thus there would be a tendency to cause imperfect drying of the paper web.

To avoid this annoyance and incidental loss is the object of my invention.

I attain my object by providing at the ends of the drier rolls peripheral surfaces sunken below those of the body of the roll, the tape-carrying faces of the ends of such sunken surfaces being located in a plane determined by the thickness of the tapes,

so as to Cause the tapes to travel at the same speed as the carrier rolls while traveling on the latter. I

The "details of my invention are hereinafter fully de cribed.

Patented July 21,1914.

In the accompanying drawings: 'Figure 1 is a diagrammatic side elevation of the drier section of 'apaper machine, indicating by'a'rrows the direction of travel of the drier rell's; Fig. 2 is a sideelevation, partly insec'tion, of one end of one of the drier rolls, illustrating the construction of the sunken peripheral surfaces for carrying the tapes by which the leading end of the paper web is conducted from one drier roll to the other; and Fig. 3 is a view similar to that shevvn in Fig. 2, showing that the sunken'end maybe made integral with the drier roll, instead of being obtained by means of an attachment to the ends of the drier rolls, as shown in Fig. 9..

In Fig. 1, a represents diagrammatically a plurality of drier rolls journaled in staggered 'form, positively driven 1n the dlrection indicated by the arrow in this figure by suitable means, not shown in the drawings. The endless drier felts, 6, run over the idler c, and overand with said dr er rolls. the felts being moved by their fricional contact with the drier rolls.

Referring now to Fig. 2, this shows pieces as bolted to the ends of each drier roll, the end of the drier roll not shown being understood to be identical with that shown. The purpose of such end-pieces, d, is to provide peripheral surfaces at the ends of the drier rolls sunken below the peripheral surface of the main body of 'the roll, for carrying the endless tapes by which the leading end of the web of paper is earned from one drier roll to the other. The tape carrying faces of said sunken surfaces must be located in a plane determined by the thickness of the tapes, so as to cause the latter to travel at the same speed as the carrier.

section (having refthe sunken peripheral surface ends with flanges, as e, at their outer extremities. The tapes, h, z, are returned to the starting point over the idlers j, j. As the paper web, 7, is delivered from the press rolls its leading end is fed between the tapes or carriers The paper Web is thence conducted over the drier rolls to the calender end of the drier section, from whence it is delivered to the next section of the machine. As obvious, the paper web is carried over and around each drier roll without any attention being requlred from the operator. It may be'found desirable to make said surface ends integral with the drier rolls. In such case fthe construction shown in Fig. 3 will be found convenient.

In this view the drier roll is represented by a, the sunken peripheral surfaceby d, and 6 represents the flange whichI' preferably provide to prevent the tapes from running off the ends of the sunken surfaces.

1. In a papermaking machine, the combination of drier rolls made with ends having peripheral surfaces sunken below the peripheral surface or the body of the roll, and endless carriers bearing in such sunken peripheral surfaces, the carrying surfaces of the latter being located in a plane. determined by the thickness of the carriers, so as to cause the carriers-to travel approximately at the same speed as the drier rolls while'traveling on the latter.

2. In a paper making 'machine, the combination of drier rolls made with ends having peripheral surfaces sunken below the peripheral surface of the body of the roll, and a flange on the outer extremities of such sunken surfaces, and endless carriers'bearing in such sunken peripheral surfaces, the

carrying surfaces of the latter being located 1 in a plane determined by the thickness of the carrlers, so as to cause the carriers to travel approximately at the same speed as the drier rolls while traveling on the latter.

3. In a paper making machine, the combination with the drier rolls, of piecesaflixed to the ends of the rolls, which pieces are made with peripheral surfaces sunken below those of the body of the roll, and endless carriers bearing in such sunken surfaces, the carrier carrying faces of such sunken surfaces belng located in a plane determined by t-hethickness of the tapes, so as to cause the carriers to travel approxlmately at the same speed as the drier rolls while traveling on the latter.

4-. In a paper making. machine, the combination with the drier rolls, of pieces aflixed to the ends of the rolls, which pieces are made with peripheral surfaces sunken below those of the body of the roll, and a flange on the outer extremities of such sunken surfaces, and endless carriers bearing in such sunken surfaces, the carrier carrying faces of such sunken surfaces being located in a plane'deterinined 'by the thickness of the tapes, so as to cause the carriers to travel at the same speed as the drier rolls while traveling on the latter.

' 5. In a machine of the character described, in-coinbination with the drier rolls, endless carriers, and supporting means adapted to bring the carrying surfaces of the carriers in the same plane as that of the periphery of the drier rolls, so as to cause said carriers to travel approximately at the same speed as the latter.

WILLIAM SHEAHAN.

Witnesses:

WM. G. ScHMrr'r, CEcIL Lone. 

